125*58+72*125-558的简便计算?
3个回答
展开全部
=125*(58+72)-558
=125*130-558
=15692
=125*130-558
=15692
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展开全部
125×58+72×125-558
=125×58+72×125-558
=125×(58+72)-558
=125×130-558
=125×100+125×30-558
=12500+3750-558
=16250-558
=16250-600+42
=15650+42
=15692
=125×58+72×125-558
=125×(58+72)-558
=125×130-558
=125×100+125×30-558
=12500+3750-558
=16250-558
=16250-600+42
=15650+42
=15692
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